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EVR AUTOMATIC RECLOSER

http://www.entecene.co.kr

31

EN

HANCED

TEC

HNOLOGY

The total length of the inter-connecting multi-core cable would be 6 meters as standard and the

longer cable is available upon request by client as option.

The fixing arrangement multi-core cable should be tightened by using tie band with every 1000

㎜

length against wind-waving.

To prevent pulling weight, loosen slighty the control cable between the cable connector and the

nearest hanger band.

5.3.3. Earthing

Figure 5-6

shows the earthing common to the recloser tank and the control cubicle.

To avoid the potential gradient differential among tank, control cubicle and surge arrester, Earthing

path should be common and do not ground by a different path to all equipments and be sure to keep

the ground cables away from the control cable by the maximum spacing available.

The earthing conductor size should be at least 60

㎟.

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Содержание EVR

Страница 1: ...IC RECLOSER USER S MANUAL ENTEC ELECTRIC ELECTRONIC CO LTD ENTEC Release Date Jan 2006 Manual Revision 1 10 Copyright 2002 by ENTEC ELECTRIC ELECTRONIC CO LTD all right reserved Forerunner Distribution Automation ...

Страница 2: ......

Страница 3: ...cation of Sulphur Hexa Fluoride Gas SF6 13 3 5 3 SF6 gas pressure Temperature Curve 14 3 6 MOLECULAR SIEVE 14 3 7 BATTERY AND BATTERY CHARGER 15 3 8 CONTROL CUBICLE 16 3 9 AUXILIARY POWER SUPPLY 17 3 10 GAS FILLING VALVE 20 3 11 ACCESSORIES 20 4 PACKING HANDLING AND STORAGE 21 4 1 PACKING AND DESPATCH 21 4 2 UNPACKING AND HANDLING 21 4 3 RECEIVING 22 4 4 STORAGE 22 5 INSTALLATION 23 5 1 INSPECTION...

Страница 4: ... INSTALLATION 25 5 3 1 1 Standard pole mounting of recloser tank 25 5 3 1 2 Substation mounting frame 28 5 3 1 3 Surge Arrester mounting frame 29 5 3 2 Control cubicle 30 5 3 3 Earthing 31 5 3 4 High voltage connection 33 5 3 5 Bushing 33 6 RECLOSER OPERATION 35 6 1 GENERAL 35 6 2 OPERATION PROCEDURE 35 7 MAINTENANCE 36 7 1 GENERAL 36 7 2 DISMOUNTING OF RECLOSER 36 7 3 CONTACT LIFE OF VACUUM INTER...

Страница 5: ...EVR in accordance with the instruction manual and keep the following guidance Be fully aware of the instruction manual before operating EVR Safety check is required before installing operating and maintenance EVR After installation connect AC 110 220V from the distribution line to the CONTROL CUBICLE and run a test operation If works need to be done after opening the control CUBICLE middle cover t...

Страница 6: ...nk can be disconnected from the Control Cubicle none of them can be exchanged with other products If replacement is required please consult with the ENTEC E E Co Ltd The inside of the main tank is filled with SF6 gas for insulation and the control cubicle is equipped with two of DC 12V batteries in series together Batteries supply DC 24V control power to a control circuit after rectifying from low...

Страница 7: ...ted making current 32 5kA peak value 32 5kA peak value 32 5 40kA peak value Power frequency withstand voltage dry wet 50kV 1 min 45kV 10 sec 60kV 1 min 50kV 10 sec 70kV 1 min 60kV 10 sec Rated impulse withstand voltage 110kV BIL 150kV BIL 170kV BIL Mechanical operation life 10 000 operations 10 000 operations 10 000 operations Auxiliary power supply AC110 220V external power sources Control circui...

Страница 8: ...ain tank can be supplied with porcelain polymeric E P D M rubber or silicone rubber bushing upon to user s request The current transformer CT is installed at the bushing connected at the fixed contact of interrupter in the main tank and CT can monitor phase fault currents earth fault currents and load currents and send signals to the control electronics If the control cable of CT is disconnected a...

Страница 9: ... power source is not available the recloser is fitted with an auxiliary voltage transformer to supply auxiliary power to the control cubicle During open and close operations the relay sends the pulse type current to the open and close coils and the magnetic force is induced by those coils and moves the plunger of the magnetic actuator This driving force is transferred to the vacuum interrupter whi...

Страница 10: ... vacuum interrupter has a capability of a large number of operations which is ideal for the recloser s application Thus vacuum interrupter with magnetic actuator provides a high reliability in operation and minimum maintenance if the replacement of the vacuum interrupter is required with any reasons please consult with manufacturer Fixed busbar Vacuum interrupter Moving busbar Opening spring Figur...

Страница 11: ...close position and the actuator is then held in the closed position In contrast when pulse current flows into the trip coil the plunger is released from the magnetic latch and the interrupter is moved to trip position Figure 3 2 The principles of magnetic actuator operation 3 3 BUSHING Bushing is mounted on the top of the recloser tank and supplied with either porcelain or polymeric bushing EPR or...

Страница 12: ...ck position the Recloser can t be operated by local remote control due to actuator power off In this lock position the user should push the manual Trip Locking device up to the trip position to release the locking status of the recloser and then the recloser can be operated by local or remote control The recloser can be opened manually by using a hot stick to pull down the manual trip handle and t...

Страница 13: ...e 3 1 Specification Determination Specification Unit Analysis Purity 99 9 wt 99 9 CF4 0 05 wt 0 03 Air 0 05 wt 0 03 Water 50 Vppm 50 Acidity as HF 0 3 mg kg 0 3 Hydrolye fluor 1 mg kg 1 Table 3 2 Physical properties Sublimation point 1 0133 bar 63 9 Melting point 2 26 bar 50 8 Vapour pressure 20 21 08 bar Critical temperature 45 55 Critical pressure 37 59 bar Critical density 0 74 kg l Gas density...

Страница 14: ... and other designations must not be used in SF6 gas The 13X has a controlled pore size of about 9 angstrom 0 9 as typical chemical Na2O Aℓ2O3 2 5SiO2 nH2O A polyester bag containing molecular sieve beads is placed inside the enclosure and the control cubicle Molecular sieve 13X is commonly used for the concurrent removal of H2O and CO2 from gas air streams and removal of H2S Molecular sieve 13X ca...

Страница 15: ...ontrol circuit is placed in the lower part of the control cubicle and can be easily replaced The battery life is usually 5 years but it can be shortened depending on how it is handled The fully charged battery is enough for 30 hours operation without an external power source Battery specification shows as follows Table 3 4 Battery Specification Battery Specification Battery Type ES18 12 Nominal Vo...

Страница 16: ...se the temperature sensitive electronic components and battery is affected by sunshine heating The microprocessor based control compartment is completely sealed against water entry even though the hatch door is opened in the rain during the recloser operation The condensation of the cubicle inside can be expected to foam due to the temperature variation under the atmospheric conditions such as tro...

Страница 17: ...rcuit regardless of charging of the sealed lead acid batteries The battery is used for the back up operation of the recloser when auxiliary power supply is lost The battery for operating the recloser is placed in the lower part of the control cubicle and arranged to be easily replaced The battery life is predicted to use for 5 years service as recommended by the battery manufacturer s data but it ...

Страница 18: ...R http www entecene co kr 18 ENHANCED TECHNOLOGY OF RECLOSER CONTROL CABLE EARTH TERMINAL MOUNTING BRACKET EARTH CABLE Epoxy Mold Transformer 110V OR 220V 500VA THE DIGITAL CONTROL CUBICLE Figure 3 6 Auxiliary power supply ...

Страница 19: ... co kr 19 ENHANCED TECHNOLOGY CONTROL CABLE LOW VOLTAGE SOURCE SUPPLIED BY UTILITYE 110V OR 220V 5KVA Tr or EARTH CABLE MOUNTING BRACKET EARTH TERMINAL AUX TRANSFORMER THE DIGITAL CONTROL CUBICLE OF RECLOSER Figure 3 7 Auxiliary power supply ...

Страница 20: ... in Figure 3 8 Figure 3 8 Gas Filling Valve 3 11 ACCESSORIES 1 ON OFF indication is located on the bottom inside of the main tank to be seen transparently from the underneath of the tank 2 Operating counter is provided in the control cubicle and if fitted available at the bottom of the main tank 3 SF6 gas pressure sensor is available if required as option 4 Pressure rupture device is mounted on th...

Страница 21: ... 160 170 210 Control Cubicle with battery kgf 80 80 85 Control cable kgf 3 5 3 5 3 5 Mounting bracket kgf 38 38 42 Gross weight in packing kgf 320 330 380 4 2 UNPACKING AND HANDLING The wooden crate should be transported by hand pallet or forklift truck The lifting procedures should be kept for safety and we recommend slinging as shown in Figure 4 1 and ensure the following procedures 1 The slings...

Страница 22: ...s of the recloser 4 3 RECEIVING A packing list will be attached to the packing case or recloser if not packed On receipt the recloser should be checked for the contents of deficiency or damage during transportation Please inform within 3 days to either the carriers supplying agent or customer services department of the ENTEC Electric Electronic Company Ltd if any damage was found 4 4 STORAGE As th...

Страница 23: ...Lifting bracket Trip and lockout lever 2 Mounting bracket 3 Control cubicle Door Door seal Door handle Control and relay on the front panel LED normal LCD normal 4 SF6 gas pressure Normal 0 5bar g at 20 Lower limit 0 2bar g at 20 CAUTION If Gas low lamp is on stop installing immediately and consult with the manufacturer 5 2 TESTING 5 2 1 Gas pressure The unit Recloser is filled with SF6 gas pressu...

Страница 24: ... The life of the vacuum interrupter is dependent upon the accumulation of the number of faults interrupted and the magnitude of fault current Consequently it is very important to record the short circuit operations If 10 000 operations have been exceeded or the LCD displayed in the control cubicle is indicated below 20 the vacuum interrupters may need to be replaced If the replacement of the vacuu...

Страница 25: ... 1 1 Standard pole mounting of recloser tank Unpack the wooden crate and clean the bushing please check and confirm that all items are included The pole mounting bracket should be assembled with the tank and hanger band is mounted on the pole and should be fixed tightly with bolts between the hanger band and the supporting bracket on the recloser as shown in Figure 3 7 Before lifting the recloser ...

Страница 26: ...ver is pulled approximately 45 degrees the recloser will trip and may either be returned to the horizontal for normal operation If the Trip lever is pulled to the latched position locking without releasing the trip lever to normal no close operation occurs Figure 5 1 Mounting Bracket and Hanger Band ...

Страница 27: ...ubicle Earth Cable 600 Pole Mounting Bracket Manual trip locking device Figure 5 2 Pole Mounting Detail CAUTION In Installation of recloser Source Side of user system and recloser Source Side shall be matched in order to have a precise metering A B C are indicated for Source Side in Recloser and R S T are indicated in Load Side ...

Страница 28: ...unting frame can be supplied together with the recloser Please assemble the mounting frame and adjust the height of mounting the recloser Fasten tightly the recloser to the mounting frame with enclosed M16 bolts and nuts 2600 2900 Adjustable H V Terminal M16 Anchor bolts Anchor bolts dimension Figure 5 3 Substation mounting frame ...

Страница 29: ...ttp www entecene co kr 29 ENHANCED TECHNOLOGY 5 3 1 3 Surge Arrester mounting frame Mounting brackets are supplied for Surge Arrester on the recloser tank if required TRIP LOCK TOP VIEW Figure 5 4 Surge Arrester mounting frame ...

Страница 30: ...icle should be lifted using the mounting bracket and mounted with similarities using the procedure for the tank When the control cubicle and the tank is mounted to the pole securely then the umbilical cable plug may be connected as shown in Figure 5 2 and Figure 5 3 Figure 5 5 Control cubicle mounting detail ...

Страница 31: ...ving To prevent pulling weight loosen slighty the control cable between the cable connector and the nearest hanger band 5 3 3 Earthing Figure 5 6 shows the earthing common to the recloser tank and the control cubicle To avoid the potential gradient differential among tank control cubicle and surge arrester Earthing path should be common and do not ground by a different path to all equipments and b...

Страница 32: ... http www entecene co kr 32 ENHANCED TECHNOLOGY CONTROL CABLE EARTH TERMINAL AUX TRANSFORMER EARTH CABLE EARTH TERMINAL THE DIGITAL CONTROL CUBICLE EARTH TEE OFF EARTH TERMINAL OF RECLOSER RECLOSER Figure 5 6 Earthing layout ...

Страница 33: ...ng of Recloser is made of either porcelain or polymer Bushing and bushing housing is completely assembled and tested at the factory before dispatching Simply users connect the high voltage cable onto High Voltage Terminal at the top of Bushing Porcelain Bushing Table 5 1 Porcelain Bushing Type Creepage distance Arcing distance Terminal type Applicable cable size Rating Amps EVR 1 440 m m 220m m Un...

Страница 34: ...EVR AUTOMATIC RECLOSER http www entecene co kr 34 ENHANCED TECHNOLOGY PORCELAIN BUSHING POLYMER BUSHING Figure 5 7 Bushing assembly ...

Страница 35: ...s are made and it is filled with SF6 gas to at least the normal service pressure 0 5 bar g at 20 4 Check that any external wiring connections for control are placed in normal 5 If the recloser does not close with electrical operation push the manual trip lever up to reset from the lockout to the trip position 6 If you intend to trip manually pull the trip lever down and check whether the position ...

Страница 36: ...support the weight of the recloser with the lifting arm engaged 4 Remove the multi core connectors on the recloser 5 Dismantle the lower hanger band fixing bolts and consequently the upper hanger band fixing bolts 6 Lift the recloser and move to the ground level 7 Dismantle the control cubicle mounting bolts 8 Lift the control cubicle and move onto the ground level 7 3 CONTACT LIFE OF VACUUM INTER...

Страница 37: ...e is expected to be much longer than the contact life of vacuum interrupter calculated by the amount of contact wear Thus it keeps the operation of recloser to be satisfactory The data of the anticipated contact life and mechanical operation shows as follows Table 7 1 Contact life of vacuum interrupter Contact life Model Mechanical operations Rated load Maximum fault current EVR 1 10 000 10 000 10...

Страница 38: ...in Figure 7 1 below The gas filling valve matches with DILO pressure coupling VK F 02 8 2 Measure the gas pressure in recloser tank 3 When the gas pressure is above 0 1bar gauge refilling SF6 gas work should be proceeded by attaching the gas filling equipment and filling the SF6 gas to 0 5bar gauge pressure 4 When the gas pressure is below 0 1bar gauge a vacuum must be drawn from the recloser tank...

Страница 39: ... ring N O K P85 EPDM EVR SP0011 2 Gas filling valve cap ENTEC EVR SP0012 Silicone grease for H V Insulation ENTEC EVR SP0013 Silicone grease for O ring Shinetsu HiVac G EVR SP0014 Water proof packing for control cubicle ENTEC EVR SP0015 Control cable with receptacle 37PIN ENTEC EVR SP0016 External power cable ENTEC EVR SP0017 Control cubicle ENTEC EVR SP0018 Mount Accessory Small ENTEC EVR SP0019 ...

Страница 40: ... entecene co kr 40 ENHANCED TECHNOLOGY Table Replaceable spare parts 2 2 Part Supplier Description Part No Communication Cable CC202 ENTEC EVR SP0031 Communication Cable CC203 ENTEC EVR SP0032 Firmware Upgrade Tools ENTEC EVR SP0033 ...

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